Dynamic range

For images: the measurement of the range of brightness in a scene expressed as a ratio, or the Log10 of the ratio. Typically a lighting cameraman will try to keep a scene to less than 40:1 (Log = 1.6) to avoid loss of detail in the print. A 100:1 (Log = 2) contrast range in the scene is a typical maximum.

Modern cameras and film stocks have dynamic ranges in excess of 13 stops which is greater than 8000:1.

See also: Cineon file, Stop